
SIP-T73U
T7 Series
Yealink T73U
SIP-T73U
Business phone with a 2.8-inch color display, 12 SIP accounts, USB, and 8 physical line keys General office staff who need a wired color-display phone with 12 SIP accounts and configurable keys
Key Highlights
- 2.8" color display with backlight (320 x 240)
- 12 SIP accounts
- 8 physical line keys and up to 40 DSS keys across 5 pages
- TEE hardware encryption solution
- Supports up to 3 EXP55 color-screen expansion modules
Role and configuration fit
Its 12 SIP accounts, 8 physical line keys, up to 40 DSS keys, and USB support fit general office roles that do not need a larger display.
Specifications
Technical details for the SIP-T73U
Is the SIP-T73U the Right Business Phone?
Choose the device around the user role, network, work area, and daily call handling rather than model name alone.
Selection guidance
Choose the SIP-T73U for a wired desk that needs a 2.8-inch color display, 12 SIP accounts, 8 physical line keys, up to 40 DSS keys, and USB. Compare the SIP-T74U for a larger color display or the SIP-T53 for a graphical display and up to 21 programmable functions.
Deployment considerations
- Plan a wired Gigabit Ethernet connection because built-in Wi-Fi is not listed for this model.
- Confirm PoE availability and any supported USB accessory before deployment.
- Count required SIP accounts, physical keys, and DSS functions separately instead of treating them as one capacity figure.
Compare the complete catalog on the business phone page or review models side by side in the phone comparison tool.
What the device quote should confirm: A SIP-T73U quote should confirm device quantity, desk location, Ethernet or Wi-Fi design, PoE or power, supported accessories, SIP account and programmable-key configuration, installation, and training. Compare those requirements with an app-only user before purchasing a physical phone for every role.

